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fix(backend/scraper): workaround broken course view page #302

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fix(backend/scraper): workaround broken course view page #302

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0cbfa70
fix(backend/scraper): exit with code 1 on error
mini-bomba Feb 7, 2026
8859106
fix(backend/scraper): workaround broken course view page
mini-bomba Feb 7, 2026
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74 changes: 60 additions & 14 deletions backend/app/scrap-registrations/scrap_registrations.ts
View file
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Original file line number Diff line number Diff line change
Expand Up @@ -192,22 +192,68 @@ export async function scrapCourseNameGroupsUrls(
.eq(1)
.text()
.trim();
const groups = $("div#layout-c22").find("div.usos-ui").children("usos-frame");
groups.each((_, element) => {
const title = $(element).find("h2");
if (
title.text().includes("(jeszcze nie rozpoczęty)") ||
title.text().includes("(w trakcie)")
) {
const linksToSubCourses = $(element).find("usos-link").children("a");
linksToSubCourses.each((__, el) => {
const url = $(el).attr("href");
if (url !== undefined) {
urls.push(url);
const cycle = $("div#layout-c22")
.find("div.usos-ui")
.children("usos-frame.zajecia")
.filter((_, element) => {
const title = $(element).find("h2");
return (
title.text().includes("(jeszcze nie rozpoczęty)") ||
title.text().includes("(w trakcie)")
);
})
.first();
if (cycle.length > 0) {
// const linksToSubCourses = $(cycle).find("usos-link").children("a");
// linksToSubCourses.each((__, el) => {
// const url = $(el).attr("href");
// if (url !== undefined) {
// urls.push(url);
// }
// });

// they broke the group display in the course view - workaround
const linkToCalendar = $(cycle)
.find("usos-timetable")
.closest("a")
.attr("href");

if (linkToCalendar !== undefined) {
const calendarResponse = await fetchData(linkToCalendar);
if (!calendarResponse.ok) {
throw new Error(
`Got response code ${calendarResponse.status} ${calendarResponse.statusText} while fetching course calendar`,
);
}

const $$ = cheerio.load(await calendarResponse.text());

const courseIds = new Set<string>();
const links = $$("usos-timetable span[slot=dialog-info] a");
for (const link of links) {
const href = $$(link).attr("href");
if (href === undefined) {
continue;
}
});
const courseId = new URL(href).searchParams.get("zaj_cyk_id");
if (courseId === null) {
continue;
}
courseIds.add(courseId);
}

const baseUrl = new URL(courseUrl);
baseUrl.search = "";
baseUrl.searchParams.set(
"_action",
"katalog2/przedmioty/pokazGrupyZajec",
);
for (const id of courseIds) {
baseUrl.searchParams.set("zaj_cyk_id", id);
urls.push(baseUrl.href);
}
}
});
}
return { courseName, urls, courseCode };
}

Expand Down
7 changes: 5 additions & 2 deletions backend/commands/scraper.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -503,8 +503,9 @@ export default class Scraper extends BaseCommand {
this.scrapingSemaphore = new Semaphore(this.maxUsosRequests);
this.dbSemaphore = new Semaphore(this.maxDbRequests);

await this.ui
.tasks({ verbose: true })
const tasks = this.ui.tasks({ verbose: true });

await tasks
.add("Scrape departments", async (task) => {
await this.departmentScrapeTask(task);
return "Done";
Expand Down Expand Up @@ -534,5 +535,7 @@ export default class Scraper extends BaseCommand {
return "Done";
})
.run();

this.exitCode = tasks.getState() === "succeeded" ? 0 : 1;
}
}